166 AMERICAN ANTEATERS SUB-OBDEK 1. XENARTHKA. Fam. 1 Myrmecophagidae.—The family Myrmecophagidae contains three genera, all South American in range. These genera MyrmecopJiaga, Tamandua, and Cydoturiis, agree greatly in their outward form. They are all without teeth, and have long snouts and long protrusihle tongues. The fur is thick, and they have powerful claws wherewith to break down the strong ant-hills upon whose inhabitants they feed. Tamandun and Cydotu<n<s are arboreal, Myrmecoph'tga is terrestrial in habit. The claws of the arboreal forms are useful to destroy the bark, , and thus bring to light insects which lurk in such situations. I The genus Myrmecopliaga contains but one species, the Great Anteater, Myrmecopliaga. jubata. It is a large and handsome animal, with long, shaggy, greyish-black hair and a broad white stripe across the shoulder. The coloration is similar in the two sexes. Including the long and bushy tail it reaches a length of over 7 feet. It is on account of its long tongue and greatly developed salivary glands that this and the allied genera were originally placed with Manis. It is the submaxillary glands which are so enormous; they extend back over the chest, and open by three distinct ducts, of which two unite just before the external oriiice.